Machine for operating upon warps



M. F. FIELD.

MACHINE FOR OPERATING UPON WARPS.

APPLICATION FILED OCT. 11, 1920- M. F. FIELD.

MACHINE FOR OPERATING UPON WARPS. APPLICATION FILED 001. 11. 1920.

Patented July 5, 1921.

2 SHEETS-SHEET 2.

PMAM @YDM 42 MILLARD 1i. F ELD, or winibriaor," mssrcaesms, AssIeNoR- roBAnBnacoLi/rmr COMPANY, OF nooKroB rr. -ri\rors, A ooBroBATIoN on ILLINOIS.

" 'IVIAGI-IEJ'E FOR- OPERATING UPON VTARPS."

' *iSpe cifieationof Letters Patent; Pate t d J ly 5 1921;

.on-ginal u aon filed me 23, 1598, Serial no, 634,201. married and this application filed October i 11,1920. se ia no, 416,120. y

To all whom it may concern: v

Be it known that I,-M1LLAno- F. FIELD, a citizen of the United States, residingf a't Winthrop, in the county of Suffolk and Commonwealth of Massachusetts, have in; vented certain new and useful Improvements in Machines for Operating-Upon'VVarps,of which the following is a specification.

This application is a division of my ap-v plicat-ion Serial No. 68%,201, filed June 23, 1898.

The invention claimed in the present plication relates to improvements in warpsupporting frames, and in its broader] as pects applicable. to various types of Ina-1 chines for operating upon warps, as, for ex-I ample, warp-drawing machines, warp-leasing machines and, warp-uniting machines.

In the accompanying drawings, Figure 1' is a vertical cross-sectional view of a warp drawing machine embodying my inventlom Fig. 2 is a rear view of the same, some parts not directly concerned with my invention being omitted, and portions in the center of the machine being shown as broken away to shorten the view. Fig. 3 is a View of parts shown in Fig. 2, drawn to a s0mewhat en-' larged scale, the view being taken on the dotted line 33 of Fig.2. Fig. 4 is a per-. spective view of the feed screw, showingthe course of the warp threads andthe manner in which they are} acted uponand controlled. In the drawings, a designates the frame of the machine which supports the tracks Z) Z) upon which the mechanism carriage c travels. i r Y 71: is the screw shaft and Z is the thread-' spacing screwon the shaft,'the saidscrew consisting of the frusto-conical and fluted or corrugated part 2 for gradually increasing'the tension upon the warp threads as they approach thedrawlng-ln l1ne,,and the plain cylindrical part 3 upon whichv the stretched warpthreads may be collected to be taken by the screw part 4; I

w are the warp threads whichextend upfrom the warp beam (not shown), and pass' between the clamp bars p, thence partially around the screw shaft and screw, and thence between the pair .of. clamp bars 9; The latter pair of clamp bars hold the ends of the warp threads frictionally but wlth a yielding pressure so that the same can be drawn out from between the bars without danger of brealdng the"threads, while the pa r of clamp bars hold the thread so firmly that they cannot be drawn from clamped position between them. Each pair of clamp bars 2 g is connected with asection of their carrying frame 0, Which is so hung or supported that it can move to a. limited. extent, with the clamp bars,"on, a line longitudinally of the latter. In the present case the frame 0 is supported orhung from journal pins or rods rextendlng horiaontally fromeach end of the frame, which pins run on rollers s journaled in a statlonary part of the machine frame.

" A' strap 25 connected at one end of the clamp bar supporting frame 0, passing over apiilley u and having'weights o applied-to the other end, tends to movethe said frame 9 and the clamp bars p Q: carried by it and as a matter of course the warp threads engaged by the clamp bars, in the direction of or toward the feed screw Z. 0 designates'a head connected and mov 'ing with the carriagejc and which is pro-' vided with a bearing Z67 for supporting the end of the screw rod 70. From the head 0' there projects'an arm as the angular end m of which extends inward in front of the foremost warp threads. 1 "It is desirable that the tensionof the warp threads should be even, and this can best be brought about when the lengthof thewarp threads between the two pairs of clamping bars p Q is even and under the same tension n.. flflectsdby th things b tween thje' hold ng or clamping points. To secure .this'evenness in the length of the portion of warp threads in question, when a warp is putlinto themachine, I may employ varlou s means-that herein shown consisting of making the frame sections which support the clamping bars so that onemay be adjusted toward and away from the other. clamping bars 39 are connectedwith the frame section 2 which'is arranged to be adjustable up and down ongthe stationary frame 2 by means of a pinion a on the shaft 1) adapted to be rotated by an end wheel'c orother means on the said shaft, the said pinion engaging a rack a formed on the frame section 2; The clamping bars q are supported on the fixed frame-section e The warp threads may be engaged by the clamping bars when the said warp threads The engaged so as to .make the portions of the warp threads between the clamps of uniform length; but to make certain of this result, when the warp is put in the warp-drawing machine the clamping bars 19 shall be adjusted so that the said portion of warp threads between the clamps'will be slack. Then, by turning the hand wheel 0 in the proper direction, the section a of the frame 0 will be moved down with the result of stretching the threadsevenly between the two pairs of clamping bars. When this has been done the frame section 2 may be rigidly secured to the section 2 by any suitable means. I

As is herein represented, the clamping bars 9 are supported on swinging arms g mounted on a pivot rod Q3 supported inthe frame section 2 A spring 9* coiled around said rod operates upon one of the arms 9 to press 7 it downward until stopped by the stops Q5 on said arms coming into contact with a cross-bar of the frame section 2 (See Fig 3.) lVith this construction the weight of the bars 9 can be made to draw constantly upon the warp threads to assist in keeping them under even tension.

It will be understood that the clamp bars 9 and the connected head carrying the warpthread separating device (in this case the warp-separating screw Z and the arm 00) can be carried on a carriage independent of. another carriage carrying the clamp bars 79, or both clamps can be carried on one carriage as shown in the drawings hereto a1 nexed. v

Having thus explained the nature of the invention and described a way of constructing and using the same, though without attempting to state all of the forms in .which it may be made or all of the modes of its use, it is declared that what is claimed is:

'1. In a machine for operating uponwarps, a warp support comprising two frame-sections, a clamp on one frame-section to hold warp threads tightly, a clamp on the other frame-section to hold the warp threads loosely, and a shaft extending parallel with the clamps, the threads extending over said shaft, said frame-sections being relatively the first clamp, thence over the shaft and arein the dresser or slasher and they may bethence to the second clamp, spring .means tending to swing the second clamp away from said shaft, and a stop to limit the action of said spring means.

8. A machine for operating upon warps having, in combination, a clamp to hold warp threads tightly, a clamp to hold said threads loosely, a shaft extending parallel to the clamps, the threads extending from the first clamp, thence over the shaft and thence to the second clamp, said clamp holding the thread partially wrapped about the shaft, means to move the tight clamp away from the loose clamp, and means to move the loose clamp away from the shaft.

4. A machine for operating upon warps having, in combination, a clamp to hold a sheet of warp threads tightly, a clamp to hold said threads loosely, a shaft extending parallel to the clamps, the threads extending from the first'clamp, thence over the shaft and thence to the second clamp, said clamps holding the threads partiallywrapped about the shaft, and means to move the tight clamp away from the loose clamp to tension the thence to the second clamp, said clamps holding the, thread partially wrapped about the shaft, andineans to move the loose clamp away from the shaft to place tension on the threads.

6. A ,mac'hine for operating upon warps having, in combination, a clamp to hold warp threads tightly, a clamp to hold said threads loosely, .a shaft extending parallel to the clamps, the threads extending from the first clamp, thence over the shaft and thence to the second clamp, said clamps holding the threads partially wrapped about the shaft, and meansto move one of the clamps to tensionthe threads over said shaft.

7. A machine for operating upon warps having, in combination, a clamp to hold warp threads tightly, a clamp to hold saidthreads loosely, a shaft extending parallel to thecla-inps, the threads extending from the first clamp, thence over the shaft and thence to the second clamp, said clamps holding the threads partially wrapped about the sheaft, and means to place tension upon the threads.

In testimony whereof, I have hereunto set my hand.

. MILLARD F. FIELD. 

